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LS3 dry sump convertion ?

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Old May 13, 2026 | 03:34 AM
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Default LS3 dry sump convertion ?

Hello!
my LS3 setup has an oilpan of the LS7 I think, internal pump installed.
as I found out the two connectors on the pan are without any direction, just connecting to the oil reservoir?
so it is pressure less? that means the oil is just an outside reservoir to hold the level ?
that would further mean, the tank must be placed, that the engine gets oil and not overfilles? level inside tank = level inside engine?
Thanks in advance!




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Old May 13, 2026 | 03:48 AM
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demounted the screw connector on the pan, there are channels, not only a stupid connection to the pan. I think they are connected to the pump.
which one will suck and press ?
now, can I mount the reservoir anywhere? I do have a Aviad tank to it, input up, output down.


channels going to the front
channels going to the front


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Old May 13, 2026 | 04:01 AM
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found GM number. GM 12605528
could anyone pls look on the GM number? what is it and how does it work? Thx!

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Old May 13, 2026 | 04:14 AM
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OK, found
both connections go to the pump. Which one should be connected to the reservoir up and down?
is it neccessary to mount the reservoir on a certain hight to the engine?
THX
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Old May 13, 2026 | 09:34 AM
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with this hopeful correct info the connection is clear



still I do not know the mounting height of the Reservoir, does it matter ?
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Old May 13, 2026 | 02:02 PM
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you seem to have answered your own questions, but does this engine have the dry-sump crankshaft and pump installed or just the wrong pan?
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Old May 13, 2026 | 02:06 PM
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engine is build for dry sump

still the question of the mounting position of the Tank to the engine
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Old May 13, 2026 | 02:36 PM
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Chatgpt
0-20cm Higher than engine
10L Start Initial Pumpe
about 12-13L according to my Setup
max 60% fill of Petterson tank
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